Bat structure

ABSTRACT

A bat structure is disclosed. It comprises a hollow body having a gripping portion, an extension portion, a hitting portion, a supporting partition disposed in a hollow tube of the hitting portion, and an inner tube body disposed in the hollow body and extended from a side surface of the supporting partition, wherein the supporting partition and the inner tube body are integrally forged with the hollow body.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a bat structure for hitting baseballs which has a high structural strength and a shock-proof effect.

2. Description of Related Art

Baseball game, a ubiquitous sport, is a bat-and-ball game played between two teams of nine players each. No matter what an official race or a friendly match is, it often brings contestants or spectators lots of enjoyment. In general, baseball equipment belongs to a professional sport equipment. The conventional bat structures can be roughly divided into two kinds of wood rods and metal rods, in which the wood rods are solid rods and the metal rods are hollow rods.

In terms of wood bat structure, it is directly made of a solid piece of wood with a gripping portion, an extension portion and a hitting portion, which conforms to standard specifications. The sound generated by a solid wood bat due to colliding with a baseball is low and short. However, the solid wood bat usually having much weight than others may hinder the speed of swinging the solid bat by a batter. Moreover, the hardness and stiffness of the solid wood bat make it hard to absorb vibration for buffering. Namely, when the solid wood bat collides with a baseball, it is prone to break or cause hand numbness to a batter due to the violent vibration. Therefore, some hollow bats are developed for solving the abovementioned problems.

For instance, a Taiwan patent No. M526424 U, issued on 1 Aug. 2016, has disclosed a bat structure. It comprises a main body having a gripping portion, an extension portion, a hitting portion in sequence, and a hollow chamber extended from the hitting portion to the extension portion in the main body. The hollow chamber further comprises an inner chamber having a diameter less than that of the hollow chamber, an opening at a terminal of the hitting portion, and a block having a perforation along an axis thereof for correspondingly engaging with the opening. However, the rigidity of the hitting portion of the hollow bat structure is reduced so that the hollow bat structure is prone to crack or break due to serious deformations of the hitting portion.

A Taiwan patent No. M520395 U, issued on 21 Apr. 2016, has also disclosed a bat structure. It comprises at least one damping device therein. The damping device comprises a low elastomer disposed on the inner annular wall of a hitting portion of the bat structure, and the low elastomer comprises an accommodation space and a high elastomer accommodated in the accommodation space. An outside surface of the high elastomer contacts to an inner surface of the accommodation space of the low elastomer. However, it is difficult to assembly the damping device to the hollow bat structure which has different materials from each other, and the bonding site with heterogeneous material is easily damaged, displaced or dropped by the hitting force.

SUMMARY OF THE INVENTION

In view of the above-mentioned problems, the object of the present invention is to provide a bat structure for hitting baseballs which has a high structural strength and a shock-proof effect.

Disclosed herein is a bat structure. It comprises a hollow body having a gripping portion, an extension portion, and a hitting portion having a hollow tube, wherein the hollow tube of the hitting portion is provided with a supporting partition therein, and the supporting partition is provided with an inner tube body extended from a side surface thereof in the hollow body. The characteristic is that the supporting partition and the inner tube body are integrally forged with the hollow body. Accordingly, the bat structure having vibration absorbing spaces can decrease the transmission of resonance waves from the hitting portion to the gripping portion and thus achieve efficacy of shock-proof and preventing hand numbness of a user during his batting.

According to an embodiment of the present invention, the open end of the hitting portion is sealed with a lid.

According to an embodiment of the present invention, the gripping portion, the extension portion, and the hitting portion of the hollow body are forged integrally.

Compared with the technique available now, the present invention has the following advantages:

1. The supporting partition and the inner tube body of the present invention are integrally forged with the hollow body, so the hollow bat structure has an increased structural strength and can prevent occurrence of deformation when an external force is exerted thereon.

2. Vibration absorbing spaces formed by the supporting partition and the inner tube body can decrease the transmission of resonance waves from the hitting portion to the gripping portion and thus the present invention has efficacy of shock-proof and preventing hand numbness of a user during his batting.

3. The supporting partition and the inner tube body integrally forged in the hitting portion can simplify the production process and enhance the overall strength of the bat structure, so the present invention has advantage of saving time.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective diagram showing a bat structure according to the present invention;

FIG. 2 is a stereogram showing a bat structure according to the present invention;

FIG. 3 is a cross-sectional diagram showing a bat structure according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As showed in FIGS. 1-3, a bat structure comprises:

a hollow body (1) having a gripping portion (11), an extension portion (12), a hitting portion (13), an open end (14) disposed on the hitting portion (13), a supporting partition (15) disposed in a hollow tube of the hitting portion (13), and an inner tube body (16) extended from a side surface of the supporting partition (15) in the hollow body (1) for dividing a first vibration-absorbing space (A) in the middle thereof and a second vibration-absorbing space (B) between the inner tube body (16) and the hollow body (1), wherein the supporting partition (15) and the inner tube body (16) are integrally forged with the hollow body (1); and

a lid (2) correspondingly sealed at the open end (14) of the hitting portion (13).

Referring to FIGS. 1-3, a bat structure used for hitting baseballs is disclosed. The hollow body (1) can be made of an aluminum material. A gripping portion (11) for holding by a batter is provided on the hollow body (1). An extension portion (12) is extended from the gripping portion (11) and a hitting portion (13) is extended from the extension portion (12). The gripping portion (11), the extension portion (12), and the hitting portion (13) of the hollow body (1) are forged integrally.

In a process of forging the bat structure, a supporting partition (15) is first provided in a hollow tube of the hitting portion (13), and then an inner tube body (16) extended from a side surface of the supporting partition (15) in the hollow body (1) is further forged integrally to form a first vibration-absorbing space (A) in the middle thereof and a second vibration-absorbing space (B) between the inner tube body (16) and the hollow body (1). Finally, a lid (2) is provided to correspondingly cover at the open end (14) of the hitting portion (13).

In use of the bat structure for hitting baseballs with a high speed by the hollow body (1), the first vibration-absorbing space (A) and the second vibration-absorbing space (B) can absorb vibration to slow down the transmission of resonance waves from the hitting portion (13) to the gripping portion (11). Accordingly, the bat structure comprising vibration absorbing spaces have efficacy of shock-proof and can prevent hand numbness of a batter during his batting.

Compared with the technique available now, the present invention has the following advantages:

1. The supporting partition and the inner tube body of the present invention are integrally forged with the hollow body, so the hollow bat structure has an increased structural strength and can prevent occurrence of deformation when an external force is exerted thereon.

2. Vibration absorbing spaces formed by the supporting partition and the inner tube body can decrease the transmission of resonance waves from the hitting portion to the gripping portion and thus the present invention has efficacy of shock-proof and preventing hand numbness of a user during his batting.

3. The supporting partition and the inner tube body integrally forged in the hitting portion can simplify the production process and enhance the overall strength of the bat structure, so the present invention has advantage of saving time. 

1. A bat structure, comprising: a hollow body having a gripping portion, an extension portion, a hitting portion, the hitting portion having an open end, a supporting partition disposed in a hollow tube of the hitting portion, and an inner tube body extended from a side surface of the supporting partition in the hollow tube, the inner tube body forming a first vibration-absorbing space therein, and a second vibration-absorbing space formed between the inner tube body and an inner surface of a peripheral wall of the hollow tube, the first vibration-absorbing space being an empty space, wherein the supporting partition and the inner tube body are integrally forged with the hollow body; and a lid correspondingly sealed at the open end of the hitting portion.
 2. As the bat structure claimed in claim 1, wherein the gripping portion, the extension portion, and the hitting portion of the hollow body are forged integrally.
 3. As the bat structure claimed in claim 1, wherein the hollow body is made of an aluminum material. 